Quote Originally Posted by scttydb411
jump car and allow batt to fully charge. shut off car and disconnect batt and let sit overnight (it's possible the batt is taking a dump on you and the cold has just pushed it over the edge). take batt in for test to see if it's dying on it's own-volt and load test(bad cell, etc). if everything checks out then you have an issue w/ the car/wiring/grounding. when it gets cold like this i have seen issues w/ rats getting up in/underneath the batt and dash and chewing on wires. is your car left outside or inside at night?
how long do you think it would take to charge?

it's left outside.

thanks for the tips btw.